Process of beating stuff for the manufacturing of paper in conical stuff beaters, asjordan engines, marshall engines, etc.



Patented June 2, 1925.

UNITED STATES PATENT OFFICE.

ANDERS Eli/[IL RYBERG, OF DRAIiJIIVEEN, AND PEDER CHRISTIAN SCI-IAANNING, OF CHRISTIAIIIA, NORVJAY.

PROCESS OF BEATING STUFF FOR THE MANUFACTURING 03. PAPER IN GONICAL STUFF HEATERS, A'S JORDAN ENGINES, BLARSHALL ENGINES, ETC.

' August 23, 1922, patented under No. 37526;

France, filed August 29, 1922, patented under No. 555 191; Belgium, filed August 31, 1922, patented under N0. 3051M; Finland, Serial 1998, filed Sept. 2, 1.922, patented under N0. 9701; England, Serial 24321/22, filed Sept. 8, 1922, patented under No. 19 1658; Canada, Serial 271405, filed October 26, 1922, pending), of which the following is a specification.

In order to allow of the passage of fibrous substances for the manufacture of paper through the conical beater in the ordinary methods of working, a certain dilution of the paper-stuff with water is indispensable. If the density of the stuff be increased, the speed of passage of the stuff conveyed through the conical heater is diminished, and finally it entirely ceases.

In the method of working conical heaters hitherto customary, a great dilution of the stufl with water has been necessary, and in consequence great power is required for beating the stuif, conveying the water and stuff and overcomingthe friction of the liquid, in beating. The consumption of power necessitated by the presence of the water is therefore considerable.

Now this invention has for its object to feed the fibrous substances to the conical beater with but little water dilution, in order thereby to increase the beating action, whilst at the same time reducing the power con sumption or with an equal power consumption to be able to treat a larger quantity of 4;, 1922. Serial No. 528,287.

paper-stuff. For this object the paper-stulf which passes through the conical beater has introduced into it'at or before its entrance into the conical beater, a certain quantity of compressed air or gas. and in this way the paper stuff is permeated by the air or gas. This passage of the air or gas through the paper-stud allows of a denser entrance (greater consistency) of the'stutl and assists the beating. The air can be not only introduced before or during admission of the stuff to the conical. beater, but also further during the passage of the stuff through the conical beater into the latter itself.

JV e are aware that itvhas been proposed by others to introduce steam into the Jordan engine. But the only object of introducing steam has been that the alkalies added to the paper stutl' should be maintained hot during the beating process in order to assist the chemical action of the alkalies. As, however, the steam becomes condensated, a very great dilution) of the paper stuff with Water will be. the consequence whereby the expenditure of power for the beater will be uselessly increased. This disadvantage is avoided by the present invention, i. e. by

V diluting the stuff with very little water only and by introducing compressed air or compressed gas into the stuff either before or at its entrance into the conical beater.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim 1s:

In the process for beating paper-stud the introduction of compressed air into the aper-stuff before or during its admission into the conical beater.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

ANDERS EMIL RYBERG.

PEDER CHRISTIAN SCHAANNXING.

W'itnesses EDWARD JOHNSON, DAGNY SYVERSEN. 

